code: def test_basic_stepplot(df_stock):
      """Test for basic stepplot"""
  
      p_basic_stepplot = df_stock.plot_bokeh(
          kind="step", show_figure=False
      )
      p_basic_stepplot_accessor = df_stock.plot_bokeh.step(
          show_figure=False
      )
  
      p_basic_stepplot_pandas_backend = df_stock.plot(
          kind="step", show_figure=False
      )
      p_basic_stepplot_accessor_pandas_backend = df_stock.plot.step(
          show_figure=False
      )
  
      # Output plot as HTML:
      output = pandas_bokeh.row(
          [
              p_basic_stepplot,
              p_basic_stepplot_accessor,
              p_basic_stepplot_pandas_backend,
              p_basic_stepplot_accessor_pandas_backend,
          ]
      )
      with open(
          os.path.join(DIRECTORY, "Plots", "Basic_stepplot.html"), "w"
      ) as f:
          f.write(pandas_bokeh.embedded_html(output))
  
      assert True
  
imports: import os
  import numpy
  import pandas
  import pytest
  import pandas_bokeh
label_desc: Use image node_id 12 for calling a global function with example usage: test_basic_stepplot(df_stock) without return types